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package com.zjdt.epserver.servlet.web.product;

import com.google.gson.Gson;
import com.zjdt.epserver.db.service4mysql.ProductServiceImpl;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.dusin.web.util.JsonUtil;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 *
 * @author dusin
 */
@WebServlet(name = "ProductLoadByFactory4Combo", urlPatterns = {"/servlet/web/product/LoadByFactory4Combo"})
public class LoadByFactory4Combo extends HttpServlet {
    private ProductServiceImpl instance;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/json;charset=UTF-8");
        PrintWriter out = response.getWriter();
        List<Map<String, Object>> products=null;
        try {
            ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());
            instance = (ProductServiceImpl) context.getBean("productService");
            
            String factoryCode = request.getParameter("factoryCode");
            
            if(factoryCode==null||"".equals(factoryCode)){
                products = new ArrayList<Map<String,Object>>();
            }else{
                products = instance.findAllByFactory(factoryCode);            
            }
            Gson gson = new Gson();
            String jsonText = gson.toJson(products);
            out.print(jsonText);
            
        } catch (Exception e) {
            products = new ArrayList<Map<String,Object>>();
            Gson gson = new Gson();
            String jsonText = gson.toJson(products);
            out.print(jsonText);
            e.printStackTrace();
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
